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Trigonometry

Trigonometry is a field of mathematics. It is the study of triangles. Trigonometry includes planar trigonometry, spherical trigonometry, finding unknown values in triangles, trigonometric functions, and trigonometric function graphs.

3,810 Questions

How do you find amplitude in trigonometry?

The amplitude of a sine (or cosine) curve is the difference between the maximum and minimum values of the curve, measured over a whole cycle.

Some trigonometry mathematician?

Some trigonometry mathematicians also worked on other aspects of mathematics. Hope that answers your question.

What is the meaning of trigonometry?

The word trigonometry comes from two Greek words, trigonon, meaning triangle, and metria, meaning measurement. This is the branch of mathematics that deals with the ratios between the sides of right triangles with reference to either of its acute angles and enables you to use this information to find unknown sides or angles of any triangle. Trigonometry is not just an intellectual exercise, but has uses in the fields of engineering, surveying, navigation, archicecture, and even rocket science.

What is the use of Trigonometry in meteorology?

Excuse me for asking, but are you attending the 2009 National MAO Convention that's like in 4 days? Reply:

LOL, wow, I thought the same thing!! The kids at my school are already done with their chalk talks! :)

30 is what percent of 125?

125 is 100 percent.

125/100 =1.25 is 1 percent.

This value times 30 gives you the 30 percent.

Solution: 37.5

You can also use the 10% method. Any time you wish to find 10% of any number, move the decimal point one place to the left. The 1% method requires you to move two places to the left.

So in that example, 30% of 125, when we move the decimal one place to the left we result in 12.5, which is 10% of 125.

Now a simple multiplication or addition problem will yield the following:

12.5 x 3 = 37.50

12.5 + 12.5 + 12.5 = 37.50

What are the properties of a Equilateral Triangle?

an equilateral triangle has 3 congruent sides and angle measures.

What is log to the third power equal to?

Log (x^3) = 3 log(x)

Log of x to the third power is three times log of x.

Why is the sine of 90 degrees equal to 1?

Sine = Opposite divided by Hypotenuse Opposite is the side of the triangle opposite the angle (in this case the 90o angle). Hypotenuse is the side opposite the right angle in a right angle triangle. Therefore, Sine 90 = 1 because the opposite side and the hypotenuse are the same side, they are both opposite the right angle.

Why is the cosine of 90 equal to 0?

That is the definition. If you take your unit circle (a circle with radius 1 centered at the origin (0,0). you start at (1,0) and go counterclockwise around the circle 90° you end up at (0,1) that 0 is the cosine of the angle 90°

In fact, you don't even need the unit circle. Take a circle of any radius r, and draw a ray at 90 degrees. This will intersect the y-axis. So as above, the coordinates are (0,r) (instead of (0,1)) so cos(90 degrees)=x/r=0/r=0

Where does the term trigonometry come from?

"Trigonometry" comes from the Greek words trigonon and metron, and roughly translates to "the measurement of angles".

What shape is a trapezium?

A trapezium is a shape with four sides. Of these, one pair of sides are parallel. The only restriction on the other pair is that they are not parallel (because you then have a parallelogram).

What are the scopes of trigonometry?

Trigonometry (from Greek trigōnon "triangle" + metron "measure") is a branch of mathematics that studies triangles, particularly right triangles. Trigonometry deals with relationships between the sides and the angles of triangles, and with trigonometric functions, which describe those relationships and angles in general, and the motion of waves such as sound and light waves.

There are an enormous number of uses of trigonometry and trigonometric functions. For instance, the technique of triangulation is used in astronomy to measure the distance to nearby stars, in geography to measure distances between landmarks, and in satellite navigation systems. The sine and cosine functions are fundamental to the theory of periodic functions such as those that describe sound and light waves.

Fields that use trigonometry or trigonometric functions include astronomy (especially for locating apparent positions of celestial objects, in which spherical trigonometry is essential) and hence navigation (on the oceans, in aircraft, and in space), music theory, acoustics, optics, analysis of financial markets, electronics, probability theory, statistics, biology, medical imaging (CAT scans and ultrasound), pharmacy, chemistry, number theory (and hence cryptology), seismology, meteorology, oceanography, many physical sciences, land surveying and geodesy, architecture, phonetics, economics, electrical engineering, mechanical engineering, civil engineering, computer graphics, cartography, crystallography and game development.

What jobs require that you know trigonometry?

Architect, they need to know trigonometry functions, among others they utilize to find the size of unknowns parts of shapes.

Surveyors, carpenters.

Trig is not restricted to angles, it has huge applications in waves, and occurs frequently as solutions to certain common differential equations. It is needed by any job that uses math. Thus, all engineers need trig, and it would be beneficial to any person who pursues science.

What is euler's formula?

Euler's formula states that, for any real number x,

eix = cos x + i sin x

where e is the base of the natural logarithm, i is the imaginary unit, and cos and sin are the trigonometric functions cosine and sine respectively, with the argument x given in radians.

[Sources:]

[1] My own knowledge.

[2] linked

Multi sided shape?

Placing a question mark at the end of a phrase does not make it a sensible question. Try to use a whole sentence to describe what it is that you want answered. The answer may be "polygon" but it is difficult to tell when the question is unclear.

How do you calculate radius?

Radius is calculated by dividing diameter by two.

Measure the distance across the circle then divide it in half for example:

You measure the distance across the circle (the diameter) = 6,

then 6 divided in half, the radius is 3.